Headrest for a seat



FIG. 1 is a top perspective view of a headset for a seat showing my new and ornamental design,

FIG. 2 is a rear view thereof,

FIG. 3 is a right side view thereof,

FIG. 4 is a top plan view thereof,

FIG. 5 is a left side view thereof,

FIG. 6 is a bottom view thereof; and,

FIG. 7 is a front view thereof.

The broken lines which define the bounds of the claimed design in FIGS. 1–7 form no part thereof. 

The ornamental design for a headrest for a seat, as shown and described. 